Centrifugal cream-separator



(No Model.)

W; J. DAVIS. GENTRIPUG AL CREAM SBPARATOR- No. 574,888. Patented Jan.12, 1897.

mq g k1 UNITED STATES PATENT. OFFICE.

VILLIAM J. DAVIS, OF CHICAGO, ILLINOIS.

CENTRIFUG AL CREAM-SEPARATOR.

SPECIFICATION forming part of Letters Patent No; 574,888, dated January12, 1897.

Application filed June 19, 1895. Serial No. 553,308- (No model.)

To all whom, it man concern:

Be it known that I, WILLIAM J. DAVIS, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented a certain new and useful Improvement in CentrifugalCream-Separators; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention relates to improvements in that class of devices used inthe process of mechanically creaming milk, and has for its object toprovide a creaming bowl or vessel embodying features that will increasethe creamin g capacity without proportionately enlarging the dimensionsthereof, and also greatly facilitate the process of cleaning.

In the drawings, Figure l is a vertical section of a separator-bowlembodying my improved features, and Fig. 2 a longitudinal section of aplug having a milk-escape passage therethrough.

A represents a separator-bowl, which is preferably of a cylindrical formfrom the lower end upwardly for a greater proportion of its length, asshown, then gradually contracting, so as to present a slopingbreast-wall B, and finally terminating in a neck part 0 of a uniformdiameter having an integral cap end a. Thusthe bowl proper is formed ina single piece excepting the bottom D, which is detachably secured tothe lower end thereof. The driving-spindle E (shown broken away) may ormay not form an integral part of the bottom. The bottom is secured tothe bowl by a threaded connection a, but it is obvious that it may beremovably attached in any suitable manner. ing the bowl and its bottomseparable is to facilitate the process of cleaning, for it will readilybe seen that free access may be had to the interior of the bowl bydetaching the same from its bottom. A flexible packingring or gasket ainsures a tight joint.

The upper part of the bowl is inclosed by a detachable jacket F of agreater diameter and forming an annular space or chamber Z) between theinterior wall of the jacket and the exterior surface of the bowl coveredthereby. The lower end of the jacket has a threaded One of the objectsin hav-.

engagement with the bowl, as at Z), and the upper end with the exteriorneck part, as at b The bowl is provided with an annular exteriorshoulder b forming a close bearing or joint for the abutting surface ofthe removable jacket.

The bowl is provided with a number of perforations d, disposed atintervals around the circumference of the same and which open out intothe chamber between the exterior surface thereof and the interior wallof the inclosing jacket and provide for the outflow of the blue milkintosaid chamber,from which it is discharged through the screw-plug (1,having a passage d longitudinally therethrough. This screW-plugisinserted through the wall of the jacket and stops short in the blue-milkchamber. The working capacity A of the bowl may be varied and regulatedby turning the screw-plug in or out, so as to diminish or increase thedistance between the receiving end thereof and the adjacent neckwall ofthe bowl.

The cream separated from the milk flows to the center and rises up intothe neck part and is discharged therefrom through an orifice d openingout from the upper end of the bowl. This jacket is ofacontourcorresponding to that part of the bowl which it incloses, andmay be conveniently disengaged therefrom for cleaning or other purposes.A milktube G is inserted longitudinally-in the bowl, the upper(receiving) end projecting through an aperture in the top and the lower(discharge) end opening into an annular recess 9 in the bottom, so thatthe milk is uniformly distributed to the creaming-surface.

II may represent a reservoir or receptacle from which the full milk isconducted through a pipe h into the receiving-tube. This arrangementpresents a bowl that is simple in construction and which can beconveniently taken apart or put together without the possibility ofgetting the same out of balance.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. The combination with a separator-bowl, having an integral upperclosed end perforated for the insertion of a milk-receiving tube, of ajacket, detachably secured to and inclosin g the upper end of said bowland proriding an annular space or chamber between sorted through saidjacket and stopping short the adjacent surfaces, and the series ofaperin said chamber and having a passage theretures, opening into saidspace through the through for the escape of the blue milk, sub- Wall ofthe bowl, substantially as described. stantially as described. 5 5 2.The combination with a separator-bowl, In testimony whereof I affix in ysignature having an integral contracted upper end, of in presence of twoWitnesses. a jacket, detachably secured to and inclosiiw T a thecontracted upper end of said bowl with TILLTAM DAV an annular chambertherebetween, a series \Vitnesses: 10 of apertures, leading" from thebowl into said L. M. FREEMAN,

chamber, and a regulating screw-plug, in- I L. B. COUPLAND.

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